c04 - KimTaebin-ai/study_posts GitHub Wiki

int	ft_strlen(char *str)
{
	int	count;
	int	i;

	count = 0;
	i = 0;
	while (str[i] != '\0')
	{
		i++;
	}
	count = i;
	return (count);
}

void	ft_putstr(char *str)
{
	int	i;

	i = 0;
	while (str[i] != '\0')
	{
		write(1, &str[i++], 1);
	}
}

void	print_char(char c)
{
	write(1, &c, 1);
}

void	ft_putnbr(int nb)
{
	if (nb == -2147483648)
	{
		wrtie(1, "-2147483648", 1);
		return ;
	}
	if (nb < 0)
	{
		print_char('-');
		nb = -nb;
	}
	if (nb >= 10)
	{
		ft_putnbr(nb / 10);
	}
	print_char('0' + nb % 10);
}

int	is_space(char c)
{
	return (c == ' ' || c == '\n' || c == '\t' || c == '\v' || c == '\f'
		|| c == '\r');
}

int	ft_atoi(char *str)
{
	int	i;
	int	sign;
	int	result;

	i = 0;
	sign = 1;
	result = 0;
	while (is_space(str[i]))
		i++;
	if (str[i] == '-' || str[i] == '+')
	{
		if (str[i] == '-')
			sign = -1;
		i++;
	}
	while (str[i] >= '0' && str[i] <= '9')
	{
		result = result * 10 + (str[i] - '0');
		i++;
	}
	return (result * sign);
}

#include <unistd.h>

int	ft_len(char *base)
{
	int	len;
	int	i;
	int	j;

	len = 0;
	i = 0;
	j = 0;
	while (base[len] != '\0')
	{
		if (base[len] == '-' || base[len] == '+')
			return (0);
		len++;
	}
	while (i < len - 1)
	{
		j = i + 1;
		while (j < len)
		{
			if (base[i] == base[j])
				return (0);
			j++;
		}
		i++;
	}
	return (len);
}

void	ft_putnbr_base(int nbr, char *base)
{
	int		i;
	int		len;
	int		num;
	char	result[50];

	i = 0;
	len = ft_len(base);
	if (len < 2)
		return ;
	if (nbr == 0)
		write(1, &base[0], 1);
	if (nbr < 0)
		write(1, "-", 1);
	while (nbr != 0)
	{
		num = nbr % len;
		if (num < 0)
			num *= (-1);
		result[i++] = base[num];
		nbr /= len;
	}
	while (i > 0)
		write(1, &result[--i], 1);
}

#include <unistd.h>

int	is_space(char c)
{
	char	*space;

	space = " \n\t\v\f\r";
	while (*space != '\0')
	{
		if (c == *space)
			return (1);
		space++;
	}
	return (0);
}

int	find_base(char *base, char c)
{
	int	i;

	i = 0;
	while (base[i] != '\0')
	{
		if (base[i] == c)
			return (i);
		i++;
	}
	return (-1);
}

int	sanitized_base(char *base)
{
	char	*buffer;
	int		n;

	n = 0;
	while (*base)
	{
		if (*base == '+' || *base == '-' || *base == ' ')
			return (0);
		buffer = base;
		while (*buffer++)
		{
			if (*buffer == *base)
				return (0);
		}
		n++;
		base++;
	}
	return (n);
}

int	ft_atoi_base(char *str, char *base)
{
	int	result;
	int	sign;
	int	i;
	int	len;

	result = 0;
	sign = 1;
	i = 0;
	len = 0;
	len = sanitized_base(base);
	if (len < 2)
		return (0);
	while (is_space(str[i]))
		i++;
	while (str[i] == '-' || str[i] == '+')
	{
		if (str[i] == '-')
			sign *= -1;
		i++;
	}
	while (find_base(base, str[i]) != -1)
		result = result * len + find_base(base, str[i++]);
	return (result * sign);
}